Koopa Troopa is a Playable character in Mario Party.
A Koopa Troopa is a recurring enemy in the Mario series.
They are turtle-like creatures who hide in their shells when someone stomps on their heads. The Koopa Troopa is the most common classification of Koopa. Koopa Troopas come in four colors: Green, Red, Blue, and Gold. If an enemy is referred to as just "Koopa" this mostly means Koopa Troopa. The green Koopa Troopas are known to walk of cliffs, and can't jump.
In The Mario Party Series
In Mario Party, Koopa stands in the beginning of each board, when players pass him he gives them money.
Koopa's role in Mario Party 2 and Mario Party 3 is the owner of the Koopa Bank. When a player passes by the Bank, Koopa takes 5 coins from that player. If less than 5 coins, Koopa would take all of the remaining coins. If a player lands on the Bank Space, Koopa would give all the coins of the bank to that player. In Mario Party 2's Bowser Land, Koopa is replaced by Baby Bowser, where Baby Bowser will give the player who passes by the bank 5 coins and forces the player who lands on that space to lose coins instead.
In Mario Party 3, Koopa is Mario's default partner in Duel Mode. He has low attacks, low defense and low salary.
In Mario Party 4, Koopa Troopa became the host of the show with his own game board with Toad, Goomba, Shy Guy, and Boo who have their own game boards.
In Mario Party 5, Koopa Troopa is a Bank owner and the star of the minigame, Flower Shower where he got married with a female Koopa.
Koopa Troopa also had a board in Mario Party 8 that was named Koopa's Tycoon Town. There were Koopa bellhops in front of hotels, and asked the players to buy their hotel with coins. When a player landed on a lucky space, a Koopa Driver appeared, and took the player to the lucky road, where the player could collect coins and buy a 3-Star hotel for only 1 coin. Multiple Koopas also appeared on the Train and in the crowds.
Koopa Troopa appearas in Mario Party 9 for his first playable appearance. He is available from the beginning of the game.